afs600 Actel Corporation, afs600 Datasheet - Page 171

• Manufacturer Part Number: afs600
• Description: Actel Fusion Programmable System Chips Mixed-signal Family With Optional Arm Support
• Manufacturer: Actel Corporation

Table 2-93 • I/O Output Buffer Maximum Resistances
Table 2-94 • I/O Weak Pull-Up/Pull-Down Resistances
Standard
Applicable to Standard I/O Banks
3.3 V LVTTL / 3.3 V LVCMOS
2.5 V LVCMOS
1.8 V LVCMOS
1.5 V LVCMOS
Notes:
1. These maximum values are provided for informational reasons only. Minimum output buffer resistance values depend on V
2. R
3. R
V
3.3 V
2.5 V
1.8 V
1.5 V
Notes:
1. R
2. R
CCI
strength selection, temperature, and process. For board design considerations and detailed output buffer resistances, use the
corresponding IBIS models located on the Actel website at http://www.actel.com/techdocs/models/ibis.html.
(PULL-DOWN-MAX)
(PULL-UP-MAX)
(WEAK PULL-DOWN-MAX)
(WEAK PULL-UP-MAX)
Minimum and Maximum Weak Pull-Up/Pull-Down Resistance Values
= (V
= V
CCImax
= (V
OLspec
= V
CCImax
– V
OLspec
/ I
OHspec
OLspec
– V
/ I
Min.
OHspec
10 k
11 k
18 k
19 k
) / I
WEAK PULL-DOWN-MIN
O H sp e c
) / I
R
(WEAK PULL-UP)
WEAK PULL-UP-MIN
Drive Strength
(ohms)
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
6 mA
8 mA
2 mA
4 mA
2 mA
1
A d v an c ed v1 . 4
(Continued)
1
Max.
45 k
55 k
70 k
90 k
R
PULL-DOWN
(ohms)
Actel Fusion Programmable System Chips
100
100
100
100
200
100
200
50
50
50
50
Min.
10 k
12 k
17 k
19 k
2
R
(WEAK PULL-DOWN)
(ohms)
(ohms)
R
PULL-UP
2
300
300
150
150
200
200
100
100
225
112
224
Max.
110 k
140 k
45 k
74 k
3
CC
, drive
2-157